Acetylene lamp



W. J. FRlSBlE.

ACETYLENE LAMP.

APPLICATION FILED AUG.29, 192

Patented Aug. 1, 1922.

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WILLIAM J. :enrsnrn, or CHICAGO, ILLINOIS, nssienon ro-JnsTnITE MANUFAC- TURING comments, or CHICAGO, ILLINQIs, nconronarronor ILLINOIS.

ACETYLEN E LAMP.

T 0 (4H whom it may concern I Be ittknown that T, WILLIAM J. Fnisein, acitizen of the United States,-and a resident of Chicago, in the county of'Cook, State of Illinois, have invented certain new and useful Improvements in Acetylene Lamps, of which the following is a specification.

My invention relates to acetylene lamps and particularly to miners acetylene 'cap lamps. The general object of my invention is to provide improved supporting and strengthening seat structures for the detachable reflectors.

The reflectors on miners cap lamps are constructed of comparatively thin. sheet metal and are subjected to blows, bumps and strain during use in the mine, particularly when the miner taps them to stir up or loosen the carbide. The reflectors are therefore made readily detachable so that a bent or useless reflector can be readily removed and a new one applied; More in detail, the object of myinvention is to provide a reflector which is of itself strengthened, and to provide a seat therefor on the lamp to which thefireflector can be readily applied and which after receiving the reflector will further brace and strengthen it against bending or other injury during use of the lamp. i I

On the accompanying drawings I have shown a miners caplamp in which my invention is incorporated. On the drawings Fig. 1 is a front elevational view of the lamp,

Fig. 2 is a side elevational view,

Fig. 8 is a; sideelevational view of the front part of the lamp with the reflector and its supporting mechanism in section on plane 3'3, Fig. 1,

Fig. 4: is a front elevational view of a lamp showing a modified arrangement and Fig. 5 is a side elevational view of the lamp with the reflector and its supporting structure in section on plane 55, Fig. 4.

Thelamp shown comprises the cylindrical water container A and the carbide cup B. The bracket 10 and the hook 11 serve to support the lamp from the miners cap. 12 represents a valve operating lever for controlling the valve for the water feed to the carbide. The generated gas escapes through the gas tube 13 extending diametrally out at one side of the water container, and sup- Specification ofletters Patent. I

Patented Aug. 1,

7 Application filed August 29, 1921. Serial No. 498,544.

porting in its-end the gas tip 14. The reflector 15 is of the usual concavetype pro- V1 (lG Cl at its center with the hole 16 for rece ving the gas tube so that the issuing flame will extend axially with reference to the re flector. v

, In accordance with myinvention I apply an annular reenforcing frame 17 onfthe back of the reflector concentric with its axis, which frame has the cylindrical flange 18 extending rearwardly therefrom and thread ed on its exterior for engaging in the threaded annular spacing and bracing frame 19 secured to the water container concentric with the gas tube 13. As shown in Fig. 2, the rear edge of the frame 19 is shaped to intimately fit against the cylindrical wall of the water container and to receive the water containerstrengthening ridge (4. The frame is preferably rigidly secured to the container wall as by means of soldering.

The diameter of the reflector strengthening frame 17 is such that it will strengthen V the reflector at the pointwhere it would be most inclined to bend under pressure, bumps, etc. The reflector is thusof itself efliciently strengthened andreenforced, and when it is screwed on to the spacing frame 19, this frame will abut against the frame 17 and further strengthen and brace the reflector against bending or crimping, and the reflector will at all times be rigidly held in its proper plane concentric with the gas tube 18. The opening 16 in the reflector is of suflicient diameter to readily clear the gas tube when thereiflector is applied or removed. Should the reflector become damaged and useless, it can be readily unscrewed,

and a new reflector applied.

In Figs. 4 and 5 I have shown a modified arrangement. The reflector 20 has the large central opening 21 concentric: with the reflector axis from which the cylindrical flange 22 extendsrearwardly and is threaded on its interior to receive the threaded end of the cylindrical spacing and seating frame 23 which is rigidly secured to the water container concentric with. the gas tube 13. The front of the frame 23 is closed by the wall 24 which has the central opening 25 for receiving the gas tube, and this wall is concave on its outer side, its radius of curvature being that of the reflector and the concave surface forming a continuation of the reflector concave surface when the reflector is screwed into place on the frame 23. The flange 22 reenforces the reflector structure and the spacer frame 23 further strengthens the reflector and braces it against bending.

I .thus provide efficient supporting, strengthening and bracing structure for sheet metal reflectors on acetylene lamps which holds the reflectorin proper position and alinement and which prevents bending 'or distorting thereof during ordinary use of the lamp. The reflector can be readily applied orremoved at any time. Changes and modifications are, of .course, possible Which would still come within the scope of the invention and I do not therefore desire to be limited to the precise construction and arrangement shown and described. I claim as my invention:

1. The combination with a lamp body having a gas orifice, of a spacer frame intimately engaging with and secured to the lamp body concentric with said orifice, a reflector having a central opening, a reenforcing wall surrounding said opening and extending rearwardly from the reflector, said wall being adapted for detachable threaded engagement with said spacing frame whereby said reflector may be secured to and seated against the front edge of said frame to bring the reflector opening in registration with said gas orifice.

2. The combination with a lamp body having a gas orifice, of an annular spacer frame secured at its rear edge to the-body concentric with said orifice, a concave reflector having an opening, a reenforcing frame on said reflector concentric with said opening, a flange on said reenforcing frame, said flange having threaded engagement with said spacer frame whereby to, secure the reflector against the front edge of said frame with its opening in registration with the gas orifice.

3.- The combination with a cylindrical lamp body having a gas burner tube extend ing diametrally therefrom, an annular spacer frame intimately engaging at its rear edge against said body and secured thereto concentric with said tube, a reflector having an opening for receiving said tube, and'a flange 011 said reflector concentric with Said opening, said frame and flange being threaded whereby said reflector may be secured to said frame to seat against the front edge thereof.

4. The combination with an irregularly shaped lamp body having a gas orifice, an

annular spacer frame shaped at its rear edge to intimately fit said body and being permanently secured to the body concentric with said orifice, a concave reflector having an opening, a reenforcing flange on said reflector at a distance fromhsaid opening but therewith, a flange extending rearwardly from said reenforcing frame, said flange being threaded and said spacer frame being threaded to receive the flange whereby the reflector may be secured to the frame and seated against its front edge with the reflector opening in registration with the gas orifice. v, V

6. The combination with an irregularly shaped lamp body having a gas burner tube projecting laterally therefrom, of an annular internally threaded spacer frame shaped at its rear end to intimately fit against said body and beingsecured thereto concentric with said tube, a reflector having a central opening, a reenforcing projection on the rear of said reflector spaced a distance from said opening but concentric therewith, external threads on said reenforcing projection for engaging with the threads of said spacer frame whereby said reflector may be detachably secured to said spacer frame against the front edge thereof and with its opening concentric with said burner tube. a a

In witnesswhereof, I hereunto subscribe my name this 26th day of August,=1921.

' WILLIAM JP FRISBIE. 

